/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraNodeFunctionCall.h
Called to determine if a pin can be moved by the user. Negative values for up, positive for down.
virtual bool CanMovePin ( const [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * Pin, int32 DirectionToMove ) const